Does this app even work with the iMac? I tested by importing mts files from my video camera. On the second r third clip it always either kernel panics or the screen goes black and makes noise. This is a 2009 i7 2.8 with 8gb RAM. Just for kicks I tried same thing on my 2010 i3 iMac. It freaks out also but is different. I get snow. Guess that's why it's called snow leopard. Anyway I'm going to revert back to 10.6.4 and see what happens.